The xbox one we have in the office at work died yesterday evening, would boot up briefly, logo on kinect and console would illuminate then there would be a quiet 'pop' and it would then shut off, we stripped it down (our US machine cannot be exchanged in japan) and found it to be a defective aluminum capacitor located under where the hard drive housing sits, waiting on a replacement we ordered to see if it can be fixed.
Modern tech, it will never be flawless.